<template>
  <el-dialog
    title="新增员工"
    :visible="showDialog"
    top="8vh"
    @close="closeDialog"
    @click.native="handleDialogClick"
  >
    <!-- 表单 -->
    <el-form ref="addForm" :model="formData" :rules="rules" label-width="120px">
      <!-- 绑定数据,绑定校验 -->
      <el-form-item label="姓名" prop="username">
        <el-input v-model="formData.username" style="width:50%" placeholder="请输入姓名" />
      </el-form-item>
      <el-form-item label="手机" prop="mobile">
        <el-input v-model="formData.mobile" style="width:50%" placeholder="请输入手机号" />
      </el-form-item>
      <el-form-item label="入职时间" prop="timeOfEntry">
        <el-date-picker v-model="formData.timeOfEntry" style="width:50%" placeholder="请选择入职时间" />
      </el-form-item>
      <el-form-item label="聘用形式" prop="formOfEmployment">
        <el-select v-model="formData.formOfEmployment" style="width:50%" placeholder="请选择">
          <el-option
            v-for="item in EmployeeEnum.hireType"
            :key="item.id"
            :label="item.value"
            :value="item.id"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="工号" prop="workNumber">
        <el-input v-model="formData.workNumber" style="width:50%" placeholder="请输入工号" />
      </el-form-item>
      <el-form-item label="部门" prop="departmentName">
        <!-- v-model
             (1)设置 input框的 value 属性
             (2)注册了监听，监听input事件，当输入框修改了，拿到新更新的值，更新到绑定的变量中
        -->
        <!-- :value单项数据流绑定 -->
        <el-input :value="formData.departmentName" style="width:50%" placeholder="请选择部门" @click.native.stop="handleClick" />
        <!-- el-tree组件 -->
        <div v-if="showTree" class="tree-box">
          <el-scrollbar>
            <el-tree
              v-loading="loading"
              :data="treeData"
              :props="{ label: 'name' }"
              @node-click="selectNode"
            />
          </el-scrollbar>
        </div>
      </el-form-item>
      <el-form-item label="转正时间" prop="correctionTime">
        <el-date-picker v-model="formData.correctionTime" style="width:50%" placeholder="请选择转正时间" />
      </el-form-item>
    </el-form>
    <!-- footer插槽 -->
    <template v-slot:footer>
      <el-button @click="closeDialog">取消</el-button>
      <el-button type="primary" @click="clickSubmit">确定</el-button>
    </template>
  </el-dialog>
</template>

<script>
import { reqGetDepartments } from '@/api/departments'
import { transListTree } from '@/utils/index'
import { reqAddEmployee } from '@/api/employees'
import EmployeeEnum from '@/api/constant/employees'

export default {
  name: 'AddEmployee',
  props: {
    showDialog: {
      type: Boolean,
      default: false
    }
  },
  data() {
    return {
      treeData: [], // 定义数组接收树形数据
      formData: {
        username: '', // 用户名
        mobile: '', // 手机号
        formOfEmployment: '', // 聘用形式
        workNumber: '', // 工号
        departmentName: '', // 部门
        timeOfEntry: '', // 入职时间
        correctionTime: '' // 转正时间
      },
      EmployeeEnum,
      showTree: false, // 是否显示tree
      loading: false, // 是否加载中

      rules: {
        username: [
          { required: true, message: '用户姓名不能为空', trigger: ['blur', 'change'] },
          { min: 1, max: 4, message: '用户姓名为1-4位', trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '手机号不能为空', trigger: ['blur', 'change'] },
          { pattern: /^1[3-9]\d{9}$/, message: '手机号格式不正确', trigger: ['blur', 'change'] }
        ],
        formOfEmployment: [
          { required: true, message: '聘用形式不能为空', trigger: ['blur', 'change'] }
        ],
        workNumber: [
          { required: true, message: '工号不能为空', trigger: ['blur', 'change'] }
        ],
        departmentName: [
          { required: true, message: '部门不能为空', trigger: ['blur', 'change'] }
        ],
        timeOfEntry: [
          { required: true, message: '请选择入职时间', trigger: ['blur', 'change'] }
        ]
      }
    }
  },
  methods: {
    closeDialog() {
      this.$emit('update:showDialog', false)
      // 重置原来的数据
      this.formData = {
        username: '',
        mobile: '',
        formOfEmployment: '',
        workNumber: '',
        departmentName: '',
        timeOfEntry: '',
        correctionTime: ''
      }
      // this.$emit('update:showDialog', false)
      this.$refs.addForm.resetFields()
    },
    async handleClick() {
      this.showTree = !this.showTree
      //   如果树形控件没有展示,直接return
      if (!this.showTree) return
      //   发送请求,获取部门列表数据
      this.loading = true
      const { data } = await reqGetDepartments()
      // depts是数组 但不是树形, 需要转换成属性结构, 才能被 el-tree 展示
      const treeData = transListTree(data.depts, '')
      this.treeData = treeData
      this.loading = false
    //   console.log(this.treeData)
    },
    handleDialogClick() {
      // console.log('对话框范围被点击了')
      // this.showDialog = true
      this.showTree = false
    },
    // 给树的每个节点，都注册上了点击事件
    selectNode(data) {
      // 可供选择的应该是叶子节点，如果节点有children，不是叶子节点
      // 进行的是展开折叠操作, 不管
      if (data.children && data.children.length > 0) {
        return
      }
      // 将选择中的叶子节点赋值给表单
      this.formData.departmentName = data.name
      // 隐藏tree
      this.showTree = false
    },

    clickSubmit() {
      this.$refs.addForm.validate(async flag => {
        if (!flag) return
        await reqAddEmployee(this.formData)
        this.closeDialog()
        // 重新渲染，通知到父组件，进行更新渲染
        // this.$emit('add-employee')

        // 找到父组件，调用父组件的方法
        // this.$parent 找父组件，但是如果是遇到了插槽的场景，会被插槽所影响
        this.$parent.getEmployeeList()
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.tree-box {
  position: absolute;
  width: 50%;
  min-height: 50px;
  left: 0;
  top: 45px;
  z-index: 100;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding-right: 5px;
  overflow: hidden;
  background-color: #fff;
  max-height: 200px;
  overflow: auto;
  ::v-deep {
    .el-tree-node__content {
      height: auto;
    }
  }
}
</style>
